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why does `animateColorAsState` break my `@Preview` in Flamingo?

&gt;  Could not get applicationId for my.module.main. Project type: PROJECT_TYPE_LIBRARY

that was reported... if I add `applicationId` into the default config of my library... the preview starts working again

You need to set applicationId only n module:app, the others library module, does not set applicationId. Its not about IDE version

if I don't add this, the preview will not render.

Are previews only supported in application modules?

your project must have at least one applicationId, thats correct. @Preview are supported in any module (app or library), check your definitions

so just to be really clear:

Using `animateColorAsState` in a `@Preview` in an android library module resulted in no previews rendering. Changing the use of animateColorAsState to a static colour resulted in all the previews rendering correctly.

Upon replacing the static colour with `animateColorAsState` again, Android Studio notified me of the following exception:

&gt; Could not get applicationId for my.module.main. Project type: PROJECT_TYPE_LIBRARY
As a way of checking whether it was possible to placate the error, I placed `applicationId 'my.module'` in my build.gradle for my android library module, which resulted in the preview rendering successfully, with the AGP giving a warning that `applicationId` should not be in a library module.

Things I know:
`applicationId` shouldn't be in the build.gradle for a library module

Things I don't know:
Why the preview using `animateColorAsState` won't render unless I place `applicationId` in my build.gradle

Probably a bug. Have you checked issuetracker to see if a report already exists? If one doesn't, please consider filing one.